Triphenylphosphine CAS No. 603-35-0

Triphenylphosphine (TPP) 

CAS No.: 603-35-0 | EC No.: 210-036-0

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1. Chemical Identification

Property	Specification
IUPAC Name	Triphenylphosphane
Molecular Formula	C₁₈H₁₅P
Molecular Weight	262.29 g/mol
Appearance	White crystalline powder/flakes
Density	1.132 g/cm³
Melting Point	79-81°C
Refractive Index	1.6358
Flash Point	180°C

Synonyms:
TPP, Phosphorous triphenyl

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2. Key Applications

Chemical Synthesis

Catalysis:
✓ Homogeneous catalyst ligand
✓ Mitsunobu reactions
✓ Wittig reactionsPharmaceuticals:
✓ Chloramphenicol synthesis
✓ Antibiotic production

Industrial Applications

Polymer Industry:
✓ Polymerization initiator
✓ Photothermal stabilizerPetrochemicals:
✓ Lubricant antioxidant
✓ Oil refining catalyst

Specialty Uses

Leather chemical productionDye and pigment manufacturing

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3. Product Advantages

✔ Versatile Catalyst – Multiple reaction applications
✔ High Stability – Long shelf life under proper storage
✔ Broad Compatibility – Works in various chemical systems

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4. Physical & Chemical Properties

Solubility:Soluble in organic solvents (benzene, ether)Insoluble in waterStability:Stable in air (slight oxidation over time)Non-hygroscopic

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5. Handling & Storage

Parameter	Requirement
Storage Temp	<30°C (dry environment)
Packaging	25kg fiber drums with liner
Shelf Life	36 months
Special Notes	Avoid strong oxidizers

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6. Safety Information

Warning!

H302: Harmful if swallowedH315: Causes skin irritationH319: Causes serious eye irritation

Protective Measures:

P280: Wear protective gloves/eye protectionP305+P351+P338: Eye contact rinse procedureP302+P352: Skin contact wash with soap

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7. Quality Specifications

Purity: ≥99% (GC)Melting Range: 79-81°CLoss on Drying: ≤0.5%

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